Callionymus fluviatilis Day, 1876
River dragonet
photo by FAO

Family:  Callionymidae (Dragonets)
Max. size:  7 cm TL (male/unsexed)
Environment:  demersal; brackish; marine
Distribution:  Indo-Pacific: Indian subcontinent to Viet Nam. Common in the Mekong delta and probably found in Cambodia.
Diagnosis:  Dorsal spines (total): 4; Dorsal soft rays (total): 10; Anal soft rays: 9. Sandy yellow, ventrally lighter. First dorsal fin with a black blotch basally on third membrane. Second dorsal fin, caudal fin, pectoral and pelvic fins spotted with brown. Anal fin white. First dorsal fin lower than second dorsal fin. First spine of first dorsal fin shorter than second spine. Anal fin pale. Second dorsal fin without white bands (Ref 42832).
Biology:  Occurs on the bottom in the lower courses of rivers. Feeds on worms, zooplankton and phytoplankton. Occasionally marketed fresh (Ref. 12693).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (130435)
Threat to humans:  harmless


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